Handpiece for a compressed air gun



FIG. 1 is a perspective view showing the design for a handpiece for a compressed air gun;

FIG. 2 is a top plan view showing the design;

FIG. 3 is a bottom plan view showing the design;

FIG. 4 is a side elevation view showing the design, the other side being a minor image thereof;

FIG. 5 is a front elevation view showing the design; and,

FIG. 6 is a rear elevation view showing the design.

Broken lines shown in the drawings are for illustrative purposes only and do not form part of the claimed design. 

The ornamental design for a handpiece for a compressed air gun, as shown and described. 